what is excisable turnover

Dear All,

I have two queries in respect to excise:

1) What is the current limit of turnover for applicability of excise?

2) If the turnover of a subsidiary/associate is below the limit of excisable turnover but turnover of holding company is above the same .Is subsidiary/associate company is also liable to pay the excise duty.if yes/no- under which section/ rule?

Thanks